________ is impossible for us to offer him any help.
A．This B．It C．That D．which
So excited was the winner that he couldn’t say any word to his feelings.
A．expose B．convey C．display D．deliver
你的英国朋友Jack正在做一个课题：世界各地的生日庆祝方式。他请你介绍中国学生过生日的方式。请你根据以下要点写一封E-mail：
一、通常方式 1. 生日聚会 2. 生日礼物 3. 生日祝福
二、我认为更有意义的庆祝方式和理由
﹡词数：80-120
假定英语课上英语老师要求同桌之间互相修改作文，请你修改你同桌的以下作文。
文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
删除：把多余的词用斜线（\）划掉。
增加：在缺词处加一个漏字符号（∧），并在该词下面写出该加的词。
修改：在错的词下划一横线，在该词下面写出修改后的词。
注意：1、每处错误及修改均仅限一词。
2、只允许修改10处，多者（从11处起）不计分。zxxk
At first I was not quite willing to sit down and watched the 90-minute football match. Usually I just checked the results because I thought that was dull to watch a game in which players kicked a ball each other. Therefore, my father loves football. During the World Cup in 2002, my dad stays up late just to watch his favorite sport. Seen his strong interest in this game of 22 man running after a ball, I decided to sit down to watch the game. I found the game excited, and my dad explained for the rules. We shared our joy. Football is not too badly as long as I watch it with my dad!
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
When we think about happiness, we usually think of something extraordinary, a pinnacle (顶点) of sheer (纯粹的) delight. And those pinnacles seem to get rarer the older we get.
1 I remember playing police and robbers in the woods, getting a speaking part in the school play. Of course, kids also experience lows, but their delight at such peaks of pleasure as winning a race or getting a new bike is unreserved.
For teenagers, or people under 20 the concept of happiness changes. 2 I can still feel the pain of not being invited to a party that almost everyone else was going to. I also remember the great happiness of being invited at another event to dance with a very handsome young man.
In adulthood the things that bring great joy—birth, love, marriage—also bring responsibility and the risk of loss. 3 For adults, happiness is complex.
4 But I think a better definition of happiness is “ the ability to enjoy something”. The more we can enjoy what we have, the happier we are. It's easy to overlook the pleasure we get from loving and being loved, the company of friends, the freedom to live where we please, even good health.
While happiness may be more complex for us, the solution is the same as ever. Happiness isn't about what happens to us; it’s the ability to find a positive for every negative, and view a difficulty as a challenge. 5
A．Love may not last; loved ones die.
B．For a child, happiness has a magic quality.
C．Happiness is the meaning and the purpose of life.
D．Being happy doesn’t mean that everything is perfect.
E. The dictionary defines “happy” as “lucky” or “ fortunate”.
F. It's not wishing for what we don't have, but enjoying what we do possess.
G. Suddenly it’s conditional on such things as excitement, love, and popularity.
Batteries can power anything from small sensors to large systems．While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves．University of Missouri（MU） researchers are developing a nuclear energy source that is smaller, lighter and more efficient．
“To provide enough power, we need certain methods with high energy density（密度）”，said Jae Kwon, assistant professor of electrical and computer engineering at MU．“The radioisotope（放射性同位素） battery can provide power density that is much higher than chemical batteries．”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems （M/NEMS）．Although nuclear batteries can cause concerns, Kwon said they are safe．
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems．”
His new idea is not only in the battery’s size, but also in its semiconductor（半导体）．Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor．
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure（晶体结构） of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem．”
Together with J．David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery．In the future, they hope to increase the battery’s power, shrink its size and try with various other materials．Kwon said that battery could be thinner than the thickness of human hair．
1.Jae Kwon gave examples in Paragraph 4_________．
A．to show chemical batteries are widely applied．
B．to introduce nuclear batteries can be safely used．
C．to describe a nuclear-powered system．
D．to introduce various energy sources．
2.According to Jae Kwon, his nuclear battery _______．
A．uses a solid semiconductor B．will soon replace the present ones．
C．could be extremely thin D．has passed the final test．
3.The text is most probably a ________．
A．science news report B．book review
C．newspaper ad D．science fiction
